102 MICHIGAN SURVEY, 1905. 



11. Sympetrum ohtrusum Hagen. II. 3. One female was taken on July 

 16; many others were seen in the clearing at various times. II. 4. Five 

 males and one female were taken in the aspen zone that siuTounds the clearing, 

 July 15 and 16. II. 5. Two males and two females were taken on the heath 

 undergrowth in the aspen zone bordering the north side of the bald crest of the 

 ridge, July 15. III. 1, 2. Several individuals of the genus, thought to be- 

 long to this species, were seen at different times, flying about over the heath 

 .plants, and in the aspen zone on the mountain top. III. 3. One specimen 

 was taken among the pines on July 19. III. 4. Two males and one female 

 were taken on July 15 in the aspen zone that borders, on the east, the bald 

 crest of the first range. IV. 2. Three males were taken among the cassandra 

 bushes along Carp river on July 5. VII. 2. One taken and several seen on 

 the beaver meadow on Little Carp river, August 3. This form seemed to 

 occur most numerously in the cassandra zones and beaver meadows along 

 the streams, although it was also observed to occur quite commonly in hard- 

 wood clearings and on the bald crests. It is not strictly confined to the 

 clearings, however, but seems to occur in equal abundance in the aspen zones. 



12. Sympertum costiferum Hagen. I. One male was taken on July 30, 

 flying about over the beach of Lake Superior. This was the only specimen 

 taken. Three others which resembled this form were seen resting on the 

 beach, but they eluded capture. None were observed at any other station. 



13. Plathcmis ,ydia Drury. IV. 1, V. 2, VII. 2. No specimens 

 of this form were taken, but a dragonfly was observed several times on the 

 mudflats of Carp river, on the marsh at the east end of Carp Lake, and on 

 the beaver meadow, that can be referred to this species with little doubt. 



4. BUTTERFLIES AND MOTHS FROM THE PORCUPINE MOUNTAINS AND 



ISLE ROYALE. 



a. Porcupine Mountains. 



1. Argynnis cybele Fab. II. 3. One specimen of this form was taken 

 on the flower of a cow parsnip in the clearing, July 20, and one on a golden- 

 rod on the mountain top. III. 2, on August 10. Argynnicl forms resembling this 

 species were often seen about the clearing, "balds" and river valley, but 

 how many of these were to be referred to the species, and to the following 

 variety, was not determined. 



The observations and collections indicate that both the variety and typical 

 forms prefer an open sunny habitat. 



2. Argynnis cybele Fab. var. (near leto). For a discussion of this variety 

 see Prof. Snyder's comments on the collection at the close of the Isle Royale 

 list. II. 3. One specimen was taken, flying about the clearing, July 21, 

 and one on Carp river, IV. 2, flying about among the cassandra bushes on 

 August 12. 



3. Argynnis atlantis Edwards. Specimens of this species were collected 

 on the beach of Lake Superior, I, August 11, in the clearing, II. 3, July 16, 

 and in the valley of Carp river, IV. 2, August 12. 



4. Phyciodes tharos Drury. I. Two were taken, flying over the beach 

 of Lake Superior, July 30 and August 11, and two on a harebell on July 17. 

 II. 3. Two specimens were also found on a cow parsnip flower in the clearing, 

 July 16. This species like the Argynnids, seems to prefer open sunny habitats. 



5. Grapta gracilis Grote and Robinson. I. Five specimens were taken 

 on the rocks and flying about over the beach of Lake Superior on August 

 11. II. 3. One was collected in the clearing, August 7, and one on the face 

 of the cliff, III. 6, August 11. This form is the characteristic butterfly of 



